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Patents Grantslast 30 patents

Information Patent Grant
Free-form surface lens, method of designing free-form surface lens,...
- Patent number 10,746,904
- Issue date Aug 18, 2020
- MAXELL, LTD.
- Koji Hirata
- G02 - OPTICS
Information Patent Grant
Projection image display device
- Patent number 10,678,017
- Issue date Jun 9, 2020
- MAXELL, LTD.
- Koji Hirata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Free-form surface lens, method of designing free-form surface lens,...
- Patent number 10,185,060
- Issue date Jan 22, 2019
- MAXELL, LTD.
- Koji Hirata
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
FREE-FORM SURFACE LENS, METHOD OF DESIGNING FREE-FORM SURFACE LENS,...
- Publication number 20190129075
- Publication date May 2, 2019
- Maxell, Ltd.
- Koji HIRATA
- G02 - OPTICS
Information Patent Application
PROJECTION TYPE IMAGE DISPLAY DEVICE
- Publication number 20180052296
- Publication date Feb 22, 2018
- Hitachi Maxell, Ltd.
- Koji HIRATA
- G02 - OPTICS
Information Patent Application
FREE-FORM SURFACE LENS, METHOD OF DESIGNING FREE-FORM SURFACE LENS,...
- Publication number 20170199308
- Publication date Jul 13, 2017
- HITACHI MAXELL, LTD.
- Koji HIRATA
- G02 - OPTICS